For me, it was meeting a man that was clean. He never touched drugs. And I really wanted to be with him, so I stayed away. It was easy because I had just moved to a new state and didn't have old friends here to persuade me.
I've been married and clean now for 6 years.
There were some times I would crave it, even years later, so I went to an outpatient program for my drinking and past drug use. It helped. I quit drinking for 2 years. Now I just have 1 or 2 drinks here and there. Not very often.
Good for you on what you are doing. Lots of luck.